Friend help! i have these 2 friends who are having a fite. one day at school i had science which both are...?

when i got there my friend jess was there already so i started talkint to her. i am better friend with jess then grace but thats beside the point. we then had 2 move cl so i walked with her and since then grace has been ignoring me. i have nothing 2 do with the fight. the other day she also told another friend i was being a ***** . shes on msn now what should i say?